U.S. online ad spending is predicted to grow 23% in 2012

U.S. advertisers will spend $39.5 billion on digital campaigns in 2012, up 23.3% from 2011, according to an eMarketer analysis. The industry will likely continue to see double-digit growth rates through 2014 and should be worth $62 billion by 2016. "Advertisers' comfort level with integrated marketing is greater than ever, and this is helping more advertisers -- and more large brands -- put a greater share of dollars online,” says eMarketer analyst David Hallerman.